Threshing-machine.



A. T. & G. G, FRIBERG HINE.

THRESHING MAC APPLICATION FILED SEPT. 18, HHS- Patented Jan. 8, 1918.

4 SHEETSSHEET I ATTORNEY A. T. & G. a. FRIBERG. THRESHING MACHINE. APPLICATION FILED SEPT. 18, L916- Patented Jan. 8,1918. 4 $HEETS-SHEET 2 ATTORNEY A. T. & G. G. FRIBER'G.

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Patented Jan. 8, 1918 4 SHEETS-SHEET 4 INVENTORS wwafzffiwwar county of lolk and ATFJVID T. FRIBE RG AND GUNARID G. FRIBERG. OF FREDERIQ WISCONSIN.

THRESHING-MACHINE.

Specification of Letters Patent.

Patented Jan. 8, ildll Application filed September 18, 1916. Serial No. 120,751.

To all ux 'wm it may concern Be it known that we. Anvil) T. Fun-mac and Gonna!) G. l nuniuo, citizens of the United States residing at Frederic, in the that e of Wisconsin, have invented certain new and useful improvements in "lhreshiughlachines, of which the following a specification.

"ihisinvention relates to threshing ma chines.

(rue object of the invention is to provide a m chine of s-rimplo construction and operation for threshing peas, beans, and similar products. .Si, further object is to so construct inc of this character to reduce vibration to a minimum. Further objects will appear from the detailed description to be hereinafter presented.

in the drawingszlfigure 1 is a side view of our machine,

Fig. 2 is a side view opposite to that of Fig. l,

l ig. 3 is a longitudinal vertical sectional Vltll through our machine,

his; 4 is detail of the adjustable mount ins; for the roller of the rear apron,

Fig. 5 is a detail of the front beater,

Fig. 0 is a detail of the adjusting means for the tailings return spout, and

Fig. 7 is a detail of'the means for recipro eating the ailings discharge trough.

The frame of our invention comprises longitudinal side sills 1, the sides 9 braced by suitable upri hts 3, and the front and back ends. and the top, of usual construction.

The sills l are supported, at the front. end

of machine, on a plllow block land uprights 5, the. pillow block being mounted on the front. shaft 6 carrying the ground engaging; wheels 7. The pillow block and uprights are suitably braced 'hy braces S and 9 secured thereto and to the sills 1. The back of the machine is mounted on pillow blocks 10 secured to the sills 1 and mounted on the rear axle lit-which carries the rear wheels 12.

At the front of the machine is the cylinder casing 13 in .vhich is rotatably mounted a Cjr'lindir 14- carried by the transverse shaft 15. Below the cylinder 14, and closely adjacent thereto, is mounted a concave 16. This concave is pivoted at its front end on a transverse shaft 17 and rests on eccentrics 18 \ui'l'lfCl hy a transverse shaft 19 mounted in suitable hearings in the sides of the machine.

Keyed on one end of shaft 19 is a spring lever 20 provided with a detent which ongages av rack plate 21 secured to the side of the machine. By rotating lever 20 the position of the eccentrics l8 varied ative-ly to the concave so as to adjust the vertical position of the same. A finger rack is pivotally secured to the hack of concave 16 by a rod An inclined feeding board 24- is mountedadjacent the out. i edge. of concave 16, and a feeding platform is mounted beneath this board by means of arms 26 pivoted at their inner ends to uprights 5 and connected by chains 27, at their outer ends, to the frame of the machine.

An upwardly and backwardly inclined straw table or shaker 28 provided with the usual serrated hers is mounted in the machine frame with its lower end adjacent the inner end of the concave 16. The lower end of the shaker 28 is supported by a transverse shaft 29 secured. to the shaker by U- straps 30. "The ends of this shaft project through arcuate slots 51 in the sides 2 of the machine casing and are mounted in the lower ends of arms pivoted at their upper ends to the sides 2. The upper end of theshakcr 28 is supported on a transverse shaft 33, the ends of which are suitably journaled in the sides of the casing. By this construction the shaker is mounted so as to be freely reciprocablo by means to be hereinafter described.

Adjacent the upper inner end of the shaker 28, a second cylinder 34 is mounted on a transverse shaft 35, in a cylinder casing 36. A second concave 37 is mounted beneath this second cylinder and is vertically adjustable about its pivot in the same manner concave 16. This concave is also provided with a finger rack 38. An inclined feed board 39 is mounted adjacent the outer end of concave 37 and in alinement therewith so as to direct the material which is discharged from the upper end of shaker 28 into the said concave.

In the rear of cylinder 35, and closely adjacent to the concave 37 there is mounted an outwardly and rearwardly inclined straw shaker 40 similar to but shorter than shaker 28. This shaker is supported at its lower end on a transverse rod 41 secured thereto by J-straps 4-2, the ends of which pass supported by across bar 45 the ends of which are mounted in suitable journals mounted on the sides 2 of the machine. A third straw shaker 46 is mounted below and in back of shaker 40 and has its lower end mounted on a cross rod 47 mounted in the lower end of arms 48, the upper end of this shaker being supported by a bar 49.

As will be noted more clearly from Fig. 3 of the drawings, the shakers 28, 40, and 46 are all of open construction, each shaker being composed of a plurality of parallel spaced bars having their upper edges serrated as shown. This permits free flow of the air through the shakers thus facilitating the separation or removal of the straw. Suitable collecting means, to be later disclosed, is provided for collecting the grain which falls through the shakers and conveying it to the screen shoe, this collecting means being spaced a considerable distance below the shakers so as not to interfere with the flow of air throughthe same.

Mounted below the front concave 16 is a dirt screen 50. This screen is pivotally supported at its outer end by brackets 51 secured thereto and pivotally mounted on a transverse shaft 52 fixedly mounted in the machine frame. The inner end of dirt screen 50 is supported on a transverse rod 53 secured thereto, the ends of which pass through arcuate slots 54 through the sides of the machine and are mounted in the lower ends of arms 55 pivoted at their upper ends. A rearwardly traveling apron or conveyer56 is mounted with its lower end beneath and adjacent the inner end of the dirt screen. This apron travels over rollers 57 and 58. Roller 57 is keyed on a transverse shaft 59, the ends of which pass through the sides of the machine and are mounted in suitable bearings secured there on. On one end of this shaft is keyed a pulley 60 connected by a belt 61 to a pulley 62 keyed on a shaft 63 of fan 64. Roller 58 is an idler and is mounted on a transverse shaft 65 suitably supported on the machine frame.

The apron 56 is constructed of canvas or other suitable material across which are secured the slats 66, in the usual manner. One end of the apron is provided with a plurality of straps 67 which are adapted to be secured through buckles 68 carried by the other end of the apron. By this construction, the apron can be easily and quickly removed to permit access to the interior of the machine, and its tension can be varied as desired.

A second apron or couvc er 69 is mounted in back of apron 56 and is inclined downwardly and inwardly. The inner end of this apron is mounted on a roller 70 keyed on a transverse shaft 71 mounted in suitable bearings carried by the frame. A puli ey 72 secure the flaps in adjustment. means the blast of air flowing from the fan is keyed on one end of shaft 71 and is connected by a belt 73 to a pulley 74 keyed on the shaft 35 of the cylinder 34.

The outer end of apron 69 passes around a transverse roller 75 keyed on a shaft 76, the ends of which are mounted in bearing blocks 77. The blocks 77 are adjustably mounted in the slotted brackets 78 secured to the uprights 79 and are secured in adjustment by means of screws 80.

A screen shoe 81 is slidably mounted in the back part of the machine and carries screens 82 mounted therein in the usual way. This shoe is provided, near its inner end, with laterally projecting stub shaft-s 83. These shafts project through the arcuate slots 84 and are mounted in the lower ends of arms 85,- the upper ends of which are pivoted to the machine frame. This shoe is reciprocated in the usual manner and is mounted with its inner end adjacent the mouth 86 of the fan casing 87. Adjustable flaps or doors 88 are pivotally secured to the upper and lower edges of the fan mouth 86 by transverse rods 87. On the outer end of each rod there is keyed a spring lever 89 which coiiperates with a rack plate 90 to By this and through the screen shoe can be quickly and easily regulated to suit special conditions.

Adjacent the outer end of the shoe 81 a tailings receiving trough 91 is rockably mounted on angle arms 92. This trough is rocked by means to be hereinafter described, and communicates with the interior of the elevator casing 98 mounted on the side of the machine, near the lower end thereof. lVithin this casing is mounted a bucket elevator of usual construction passing over the usual upper and lower cog wheels. The shaft 9% of the upper elevator wheel projects from the elevator casing and a pulley 95 is keyed thereon. This pulley is connected by a belt 96 to a pulley 97 keyed on shaft 35 of cylinder 34:. A second pulley is keyed on the shaft 35 adjacent pulley 97 and is connected by a belt 98 to a pulley 99 keyed on the shaft 100 of the front beater and distributer 101.

The beater 101 is of special construction being of square cross section and provided on each face with a V-shaped blade 102. the apex of which is directed in the direction of rotation of the beater. As the grain to be threshed leaves cylindeinlt it is struck by the blades of beater 101 which act to throwit downwardly against the shaker 28 and to spread it evenly upon the shaker. As the shaker reciprocates the crushed straw and the berries which it contains are sub,- jected to a violent agitation the straw being Worked upward toward the second cylinder 34. The greater part of the berries or e5 treat, the tailings are returned into the con-.

grain fall between the slatso't' the shaker on to the apron 56 the upper run of which travels rearwardly, and by. it are discharged on to the top screen of the series of screens mounted in the shoe 81. As the straw leaves shaker 28 it is discharged on to the inclined board 39 and thence into the concave 37 of.

loosened and shaken up permitting any berries contained by the straw to fall through the slats of the shaker on to the upper run of apron 69 which travels forwardly. Any grain or berries which is carried to the upper end of the shaker 46, as might have a tendency to fall back of the outer end bf apron 69 is directed on to the apron by a deflector plate secured thereto. The grain which falls on to apron ()9 is also discharged on to the. top screen ,of the series oi screens carried by the shoe 81. The grain which is discharged on to the screens is subjected to a. thorough sitting and sorting action through the vib'ation of the. shoe;

as it passes through the various screens. It is also subjected to a strong blast of air created by the fan 64 which serves to effectually separate the chaff from the grain and blow it toward the back of the thresher casing. The chaff and lighter grains are blown from between the screens 82 and fall into the rocking tailings trough 91 from which they are discharged into the tailings elc valor. This elevator returns the tailings to be treated again, in the usual manner.

The straw from which the grain has been separated is discharged from the upper end of the shaker 46 and blows through a hood 100 from which it flows onto the upper run of the straw stacker 108 at the back of the machine. This straw stacker is pivotally mounted at its lower end on the frame sills 1 and is driven by a belt connection with the power for operating the machine, in the usual manner. This elevator is secured in adjustment by means of a cable 109 sc cured to the usual reel 110 mounted on the top of the machine.

It the beans or grain being treated is in good condition so that it can be easily threshed; the tailings are returned directly to the-front shaker 28 which separates the grain from the chaff. On the other hand,

if the grain or beans is green and hard to cave 3'? ot the second cylinder o end 1 provide an elevator with an adjustable discharge spout 111. This spout is n'ovitmd with diametrically opposite ears 112 which are pivotally connected to the tube 115 of the elevator casing. tlnc of the cars 112 is extended as at. l1laiuil'carries a headed screw 115 operative through an arcuate slot 110 in the. tube 113. A wing nut. is threaded on the outer end of screw 115 and acts to lock the arm 1H of lug or ear 112 in adjustment, in the usual manner. will be noted from Fig. 2 ot the. drawings, the upper end of ti I spout 111 considerably larger than the lower end or tube 113}. This permits the spout to he swung through a considerable angle on either o'l its pivots. With this construction it is possible to ad just the spout 111 relatively to the tube so as to direct the grain directly on to the trout shaker 28, or into the concave out the inner cylinder Ill. as indicated by dotted lines in Fig. 23, the top of the casing being provided with a suitable slot or opening 111, to permit this adjustn'ient,

After the. grain has been thormighly cleaned it is discharged from the screen shoe 81 into the transverse. grain discharge trough. This trough comprises an upper body part 117 slidably mounted in guides 11S and a lower part 110 detachably connected thereto by screws 120 11y this construction the lower part of the discharge trough can be quickly and easily detached and reversed so as to discharge the grain at either side of the machine according to circumstances.

This shaft is provided with a second iarm 129, the outer end of which is connectc by a 'link 130, to a pitman 131. The outer end of this pitman is provided with an'eccentric strap 132 secured about an eccentric 133 keyed on one end of the transverse shaft 134:. On the other end of shaft 134 is keyed a pulley 135. This pulley is connected by a belt 136 to a third pulley keyed. on shaft 35 of the inner cylinder 34. On orie end of the shaft of tront cylinder lfiis lreyed a pulley 131' rotated by a main drive belt 138 connected to the belt wheel of a traction en;

'ginc, or other suitable source of power not shown. A second pulley ,139 is keyed on shaft. 15 and is connected by belt 140 to a. pulley 141 keyed on the end of transverse of arm 48. As the shaft 142 is rotated, the

pitmen act to reciprocate the shakers 28 9 and 40 and 46 in opposite directions.

The inner end of each pitman 131 is connected by a rod 149 to the lower end of arm 55. ()n the other end of shaft 15 of the front cylinder there is keyed a pulley 150 connected by a belt 151 to the pulley 152 keyed on the shaft 63 of fan 64. A second pulley is keyed 011 shaft 15 adjacent pulley 150 and is connected by a belt 153 to a pulley 154-keyed on shaft 35 of the center cylinder 34., A second pulley 155 is keyed on shaft 71 of roller and is connected by a belt 156 to a pulley 157 keyed on the shaft 104 of the beater 103.

When shaft 15 is rotated the fan 64 driven through belt 151 and this in turn rotates the pulley 62 which acts through belt 61 to drive the shaft 59 of the front roller 57 of the apron .56. At the same time the shaft 35 of the cylinder 34 is rotated by means of the belt 153,.and the shaft 71 of the cylinder 70 of the rear apron G9 is rotated by means of the belt 73. Also the shaft 104 of the beater 103 is rotated by means of the belt 156 and pulleys 155 and 157.

As shaft 35 is rotated by belt 153 the pulley 97 keyed on the other end of the shaft is also rotated and acts through belt 136 to rotate the pulley 135 and shaft 134. As shaft 134 is rotated, the pitmen 131 are reciprocated and act to reciprocate the screen shoe 81, the dirt sifter 50, and the grain discharging trough 117. The shaft 35 also acts to rotate the pulley keyed on the shaft 94 of the drive wheel of the tailings elevator mounted in casing 93, through the belt 96.

The conca 'e. 16 of the front cylinder 14 is of grate construction so that a certain amount of the berries and a large proportion of dirt and similar foreign matter fall through on to the dirt screen or pan 50. The inner end of this pan projects a considerable distance over the top run of conveyer 56. As the dirt pan 50 vibrates, the dirt and light material readily passes through the SCH-Cl) and the grain is disclmrged on to the conveyor and by it discharged on to the screens 82. The conveyer 56 also receives any grain which falls through the concave 37 of cylinder 34, which is also of grate construction, and conveys it to the screens 82.

I tance as it completely eliminates bunching The aprons or conveyers constitute positively acting means for delivering the grain or berries to the screen in a uniform and steady stream. This feature is of impor- 70 of the berries to be treated such as occurs in using vibratory or reciprocating grain pans. By having a uniform rate of feed to the screens all interference with the flow of air through the fan 64 is eliminated. The grain falls in a uniform and steady stream through the screens, all of the herries being separated so as to permit easy flow of the air and removal of all chaff and foreign matter. This results in greatly in creased capacity, and a much better quality of grain than would be the case were the grain not so evenly and uniformly distributed on to and through the screens 82.

As will be clear from Fig. 3 of the drawings, We have the shaking tables or straw shakers, and the grain conveyor belts 69 and 56, mounted so thatthey reciprocate or operate in opposite directions. The result of this construction is that the vibration caused by the front shakers and conveyer, and the dirt pan 50, is to a great extent counterbalanced by the opposite vibration caused by the shaker and conveyer at the other end of the machine. This results in. reducing the vibration of the machine as a whole to a minimum which results in increased eflic'iency and greater durability. Also, by our construction, the grain or beans, as the case may be, is subjected to two thorough cleanin and separating operations.

The chaff discharge iscontrolled by a deflector 160, the lower edge of Which is secured to a rockably mounted transverse rod 161 on one end of which is keyed a spring lever 162 which cooperates with a rack plate 163 secured on one side of the'screen shoe 81. The larger chaff flows over the top screen and the rearwardly extending finger rack 107 carried thereby and is discharged onto the stacker 108. The smaller chatl' and tailings are blown from between the screens 82 and impinge upon the de Hector 160 which directs them into the tailings trough 91. By adjusting the deflector 160 the amount and quality of tailings returned to the machine for further treatment may be varied to suit circumstances. The tailings discharge trough 91 is rocked by means of a lever 164 formed integral with the lever 127 and secured to the rod 128, and pivotally secured to a lug which is secured to one end of the trough. By this arrangement the trough is caused to-vibrate synchronously with the vibrations of the dirt pan, the grain discharge trough 119, and the other elements connected to the pitmen 131.

There may be variations made in the construetion and arrangement'of the difierent parts of our machine without departing from the field and scope of our invention, and we intend to include all such variations as fall within the appended claims in this application, in which the preferred form only of our invention is disclosed.

What we claim, is

1. In a threshing machine, the combination of a cylinder and a concave adjacent thereto, a vibratable straw shaker mounted to receive the straw discharged by said cylinder, a second cylinder and concave mounted to receivethe straw discharged from the said shaker, a second shaker mounted to re- 'ceive the straw discharged from the second cylinder, grain screening means, means for conveying the grain from the first said shaker to the said screening means, means for conveying the grain from the second shaker to the said screening means, an elevator, means for conveying tailings to said elevator, and means for optionally dlscharging the sald tailings on to the first said shaker or into the second said concave.

with a threshing ma- 2. The combination chine having a cylinder and a concave adjacentthereto, a straw shaker mounted to re: 'ceive the straw discharged from said cylinder, a second cylinder and concave mounted to receive the straw discharged from said shaker, and grain screening means: of a tailings elevator, means for conveying tailings from said screening means to said elevator, and a discharge spout mounted above the threshing machine to receive the tailings from said elevator, said spout being adjustable about an axis extending transversely of the machine so as to direct the tailings on to the straw shaker or into the said second concave, optionally.

In a threshing machine the combination of a cylinder and a concave adjacent thereto, an upwardly and backwardly inclined vibratable straw shaker mounted to receive the straw discharged by said cylinder, straw beating and spreading means mounted above said shaker, grain screening means, an endless conveyer mounted beneath said shaker and discharging into the screen ing means, and a vibratable dirt screen mounted beneath the said concave and discharging on to the conveyer, said screen being of such mesh as to prevent passage of the grain being threshed through the same.

In testimony whereof we affix our signatures in presence of two Witnesses.

ARV-ID T. FRIBERG. GUNARD G. FRIBERG. Witnesses:

CARL M. V. PETERSON, LOUIS RAY MATUsHAK. 

